CN204086331U - A kind of shielded box being convenient to switch - Google Patents
A kind of shielded box being convenient to switch Download PDFInfo
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- CN204086331U CN204086331U CN201420544978.XU CN201420544978U CN204086331U CN 204086331 U CN204086331 U CN 204086331U CN 201420544978 U CN201420544978 U CN 201420544978U CN 204086331 U CN204086331 U CN 204086331U
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- upper cover
- shielded box
- casing
- convenient
- switch
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Abstract
The utility model discloses a kind of shielded box being convenient to switch, the air spring comprising casing, upper cover and be located between described casing and upper cover; Also be provided with electromagnetism adhesive mechanism between described casing and upper cover, described electromagnetism adhesive mechanism comprises the suction iron block and the corresponding electromagnet being arranged on described casing that arrange described upper cover; When described shielded box is in open mode, described electromagnet dead electricity, described electromagnet to suction iron block without suction, described upper cover under the effect of described air spring on turn over and open, tested product can be put into or described shielded box is safeguarded; When described shielded box needs to cover, the resistance that described upper cover overcomes air spring under the effect of external force covers on described casing, described electromagnet energising excites magnetic field to produce magnetic by the adhesive of described suction iron block, described suction iron block and electromagnet keep attracting state, and then make described shielded box keep closely covering state.
Description
Technical field
The utility model relates to the shielded box that a kind of test for electronic product provides shielding environment.
Background technology
Electromagnetic interference (EMI) (EMI) develops with electronics, electrical technology and occur, every electronics, technical field of electricity all can have electromagnetic interference (EMI).The electromagnetic interference (EMI) that electronics in a large amount of use, electrical system or equipment etc. produce can affect health, also can have an impact to the safety and reliability etc. that electronics, electrical system or equipment are mutual and endanger simultaneously.Severe electromagnetic environment often makes electronics, electrical system or equipment cisco unity malfunction, even causes fault and accident, or affects data when electronic product is tested.
But along with wireless communications products is for the raising of the accuracy requirement of Signal transmissions, electromagnetism interference performance requirement for product is more and more higher, current mobile phone, PDA and associated host circuit board complete the stage in exploitation, all need the test carrying out relevant electromagnetic property, and there is extremely complicated and serious electromagnetic interference (EMI) in general open environment, the degree of accuracy of easily impact test.Therefore, above-mentioned most test all must implement test, to reaching preferably testing precision in the environment of low EMI (or even without Electromagnetic Interference).
The common device of low EMI (without electromagnetic interference (EMI)) test environment that provides is the shielded box of a tool signal shielding function, its basic structure coordinates an openable upper cover with a casing, the accommodation space that can hold electronic product to be measured or electronic module so as to providing one, casing and the upper cover permeance that all tool is splendid, fully can isolate the interference of extraneous various electromagnetic wave noises.Shielded box generally fixes a cylinder to drive the folding of upper cover on casing, this just must have source of the gas to support the running of shielded box, and the amount of source of the gas required for shielded box is very little, utilization factor is extremely low, specially for shielded box arranges source of the gas significant cost, have larger restriction to the environment for use of shielded box, and in operation process, have larger exhaust noise, the working environment of tester is comparatively severe.
Utility model content
The purpose of this utility model is to propose a kind of shielded box being convenient to switch utilizing the folding of magnet control upper cover for above-mentioned technical matters, completely eliminates the restriction that source of the gas uses shielded box, has greatly widened the usage space of shielded box.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of shielded box being convenient to switch, the air spring comprising casing, upper cover and be located between described casing and upper cover;
Also be provided with electromagnetism adhesive mechanism between described casing and upper cover, described electromagnetism adhesive mechanism comprises the suction iron block and the corresponding electromagnet being arranged on described casing that arrange described upper cover;
When described shielded box is in open mode, described electromagnet dead electricity, described electromagnet to suction iron block without suction, described upper cover under the effect of described air spring on turn over and open, tested product can be put into or described shielded box is safeguarded;
When described shielded box needs to cover, the resistance that described upper cover overcomes air spring under the effect of external force covers on described casing, described electromagnet energising excites magnetic field to produce magnetic by the adhesive of described suction iron block, described suction iron block and electromagnet keep attracting state, and then make described shielded box keep covering state.
In the utility model, described casing is provided with the inductor for responding to described upper cover folding condition, is covered with the sensor magnet matched on described, controls described electromagnet and obtains electric, dead electricity; In the process that described shielded box covers, when described upper cover to described casing close to certain distance time, described inductor is collected the magnetic force signal of described sensor magnet and is fed back to controller (shielded box carries control panel or external control computer), controller sends control signal, and that described electromagnet is obtained is electric, is covered on described casing by described upper cover.
In the utility model, described casing is provided with urgent button of unpacking, can realize by described urgent button of unpacking the power supply directly disconnecting described electromagnet, electromagnet dead electricity magnetic is disappeared, and case lid is propped up and is opened by described air spring.
In the utility model, described casing is provided with relay indicating light, described relay indicating light has multiple indicating status, during test jobs, and described relay indicating light flicker, the shielded box being convenient to switch described in instruction enters test mode; After testing, described relay indicating light is by different color feedback test results, and red light represents bad, and green light represents and passes through.
In the utility model, the internal face of described casing and upper cover is equipped with the absorbing material layer for strengthening shield effectiveness.
In the utility model, described upper cover front end is provided with handle, conveniently opens upper cover or covers operation.
In the utility model, the described shielded box being convenient to switch is provided with and manually buckles, described manually buckle to comprise be fixed on rising to the bait and being arranged on the lower button on described casing of described upper cover, described lower button is provided with telescopic spring,, lower than described closed position of rising to the bait, rise to the bait described in after namely covering described upper cover and can not touch described lower button in the fixed position of described lower button; When needing to fasten, the described spring that stretches makes the length elongation of whole lower button on rising to the bait described in being fastened on, and after fastening, described spring is all the time to the effect of being stamped a power on described, and what ensure to be convenient to described in screen the shielded box of switch covers state.
In the utility model, described lower button is rotatably installed on described casing by rotating shaft, and during normality, described lower button is suspended in described rotating shaft downwards, during fastening, described lower button rotate up 180 ° be fastened on described in rise to the bait on.
In the utility model, described in be convenient to switch shielded box in be also provided with test fixture for clamping tested product, facilitate the wiring of tested product by described test fixture and pick and place, improving testing efficiency.
The utility model employing electromagnet covers power as shielded box and carrys out substitutable gas resources, save pneumatic element, solve conventional shielding test box and must have source of the gas to support the shortcoming of the running of shielded box, improve the use dirigibility of shielded box, and in operation process, almost do not have noise to produce, for tester provides an excellent test environment.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram being convenient to the shielded box of switch in the utility model one embodiment;
Fig. 2 is the structural representation being convenient to the upper cover of the shielded box of switch in the utility model one embodiment;
Fig. 3 is I place structure for amplifying schematic diagram in Fig. 1.
Embodiment
In order to be illustrated more clearly in the technical solution of the utility model, below in conjunction with drawings and Examples, the technical solution of the utility model is further elaborated, apparently, the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other embodiment can also be obtained according to these embodiments.
With reference to Fig. 1, Fig. 2, source of the gas is used to there is restricted problem as during power to environment for use for conventional shielded box, the present embodiment provides a kind of shielded box using electromagnet 171 substitutable gas resources, concrete technical scheme is: a kind of shielded box being convenient to switch, the air spring 13 comprising casing 11, upper cover 12 and be located between casing 11 and upper cover 12; Being provided with the test fixture 14 for clamping tested product in this shielded box, facilitating the wiring of tested product by test fixture 14 and picking and placeing, improve testing efficiency; Casing 11 and upper cover 12 are combined into a closed shielding space, test for tested product provide one can the test environment of shield electromagnetic signals, preferably, the internal face of casing 11 and upper cover 12 is equipped with the absorbing material layer 122 for strengthening shield effectiveness; Upper cover 12 is articulated and connected on casing 11, and upper cover 12 front end is provided with handle 121, conveniently opens upper cover 12 or covers operation; Be symmetrically arranged with two groups of air springs 13 between upper cover 12 and casing 11, open for supporting upper cover 12 and stay open state.
The electromagnetism adhesive mechanism for keeping keeping between upper cover 12 and casing 11 state that covers is provided with between casing 11 and upper cover 12, electromagnetism adhesive mechanism comprises the suction iron block 172 and the corresponding electromagnet 171 being arranged on casing 11 that arrange upper cover 12, electromagnet 171 suction iron block 172 is pulled together by electric rear generation magnetic force securely, and then realize closely covering of upper cover 12 and casing 11.
Concrete, when shielded box needs to be in open mode, electromagnet 171 dead electricity, i.e. electromagnet 171 disappearing magnetism, electromagnet 171 is to inhaling iron block 172 without suction, upper cover 12 under the effect of air spring 13 on turn over and open and keep turning over state, tester can pick and place tested product or carry out upkeep operation to shielded box.
When shielded box need cover test time, while the resistance that upper cover 12 overcomes air spring 13 under the effect of external force covers on casing 11, electromagnet 171 energising excites magnetic field to produce magnetic will to inhale iron block 172 adhesive, upper cover 12 enclosing cover is made to be combined on casing 11, inhale iron block 172 and keep attracting state with electromagnet 171, and then make shielded box keep covering state, for tested product is supplied to a shielding test environment.
In one embodiment, with reference to Fig. 1, Fig. 2, in the ordinary course of things, need by external force upper cover 12 to be covered after on casing 11 to power to electromagnet 171 again, electromagnet 171 obtains electric rear generation magnetic will inhale iron block 172 adhesive, make upper cover 12 keep enclosing cover to be combined in state on casing 11, shield test environment reliably for tested product is supplied to one; Shielded box can not be powered or power-off to electromagnet 171 according to the state of upper cover 12 automatically, inconvenience to some extent in use.Therefore, the present embodiment arranges one for responding to the inductor 181 of upper cover 12 folding condition at casing 11, upper cover 12 is provided with the sensor magnet 182 matched, by the folding condition of induction upper cover 12 of inductor 181 to the sensor magnet 182 of following upper cover 12 action control electromagnet 171 electric or dead electricity, without the need to manual control.Concrete, in the process that shielded box covers, when upper cover 12 to casing 11 when to certain distance, inductor 181 is collected the magnetic force signal of sensor magnet 182 and is fed back to controller (shielded box carries control panel or external control computer), controller send control signal make electromagnet 171 electric, upper cover 12 is covered on casing 11.
In one embodiment, with reference to Fig. 1, Fig. 2, covering test or being in an emergency in test process and needing to open rapidly upper cover 12 of upper cover 12 and casing 11 is carried out at shielded box, in this case upper cover 12 cannot be opened according to normal procedure, for this reason, the present embodiment arranges urgent button 15 of unpacking on casing 11, the power supply directly disconnecting electromagnet 171 can be realized by button 15 of promptly unpacking, electromagnet 171 dead electricity magnetic is disappeared, case lid is propped up and is opened by air spring 13 in time, can realize covering test to shielded box or in case of emergency opening upper cover 12 fast.
In one embodiment, in test process, different testing processs is had to should be noted that, test result can be caused inaccurate if testing process makes a mistake, even can impact the quality of tested product, the competency profiling of manual control testing process to test man of simple dependence test man is high, be unfavorable for the scale test request of enterprise, therefore, the casing 11 of shielded box arranges the relay indicating light 16 that can indicate test process and test result thereof, relay indicating light 16 has multiple indicating status, when test jobs, relay indicating light 16 glimmers, instruction shielded box enters test mode, after testing, relay indicating light 16 is by different color feedback test results, and preferably, red light represents bad, and green light represents and passes through.
In one embodiment, with reference to Fig. 1, Fig. 2 and Fig. 3, shielded box when dead electricity because the effect of air spring 13 stays open state, but shielded box needs maintenance to cover state when not using or when storing, for this reason, shielded box is provided with and manually buckles, and manually buckles 192 and the lower button 191 that is arranged on casing 11 of rising to the bait comprising and be fixed on upper cover 12, the 192 lower buttons 191 tipping casing 11 in of rising to the bait of upper cover 12 both can keep covering state, facilitated the transport of shielded box to store; Preferably, lower button 191 is provided with telescopic spring 1911, the fixed position of lower button 191 lower than rise to the bait 192 closed position, rising to the bait after covering upper cover 12 192 can not touch lower button 191, can not affect the normal use of electromagnetic shielding box; When needs fasten, extension spring portion 1911 makes the whole lower length elongation buckleing 191 rise to the bait on 192 to being fastened on, and fastens rear spring portion 1911 has a power all the time effect to upper cover 12, ensures that screen shielded box is in the state of covering all the time.
In one embodiment, with reference to Fig. 1, Fig. 2, lower button 191 is rotatably installed on casing 11 by rotating shaft 1912, during normality, lower button 191 is suspended in rotating shaft 1912 downwards, during fastening, lower button 191 rotates up 180 ° and is fastened on and rises to the bait on 192, adds the dirigibility of lower button 191 installation site while button 191 can not affect the normal use of electromagnetic shielding box under ensureing like this.
In one embodiment, for ensureing the shield effectiveness of shielded box, when closure state, surface of contact between casing 11 and upper cover 12 needs to keep contacting completely, because casing 11 and upper cover 12 are all adopt metal material manufacture, it is rigid contact when casing 11 and upper cover 12 cover, high to requirement on machining accuracy, cost is high, likely there is slight distortion and cause part contact surface between casing 11 and upper cover 12 can not close contact completely in casing 11 and upper cover 12 in use for some time with shielded box in addition, harmful effect is caused to the shield effectiveness of shielded box, for addressing this problem, one deck flexible conducting material layer (attached not shown) is added in the surface of contact position of casing 11 and upper cover 12, the deformation of flexible conducting material layer is utilized to ensure can contact completely between the casing 11 of shielded box and upper cover 12, preferably, this flexible conducting material layer selects conductive fabric, and strip of being grown up by conductive cloth is fitted on upper cover 12.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. be convenient to a shielded box for switch, the air spring (13) comprising casing (11), upper cover (12) and be located between described casing (11) and upper cover (12); It is characterized in that:
Also be provided with electromagnetism adhesive mechanism between described casing (11) and upper cover (12), described electromagnetism adhesive mechanism comprises the electromagnet (171) that the suction iron block (172) that arranges described upper cover (12) and correspondence are arranged on described casing (11);
When described shielded box is in open mode, described electromagnet (171) dead electricity, described electromagnet (171) to suction iron block (172) without suction, described upper cover (12) under the effect of described air spring (13) on turn over and open;
When described shielded box needs to cover, the resistance that described upper cover (12) overcomes air spring (13) under the effect of external force covers on described casing (11), described electromagnet (171) energising excites magnetic field to produce magnetic by the adhesive of described suction iron block (172), described suction iron block (172) and electromagnet (171) keep attracting state, and then make described shielded box keep covering state.
2. a kind of shielded box being convenient to switch as claimed in claim 1, it is characterized in that: described casing (11) is provided with the inductor (181) for responding to described upper cover (12) folding condition, and described upper cover (12) is provided with the sensor magnet (182) matched.
3. a kind of shielded box being convenient to switch as claimed in claim 1, it is characterized in that: described casing (11) is provided with urgent button (15) of unpacking, the power supply directly disconnecting described electromagnet by described urgent button (11) of unpacking realizes upper cover described in emergency opening (12).
4. a kind of shielded box being convenient to switch as claimed in claim 1, it is characterized in that: described casing (11) is provided with relay indicating light (16), described relay indicating light (16) has multiple indicating status.
5. a kind of shielded box being convenient to switch as claimed in claim 1, is characterized in that: the internal face of described casing (11) and upper cover (12) is equipped with the absorbing material layer (122) for strengthening shield effectiveness.
6. a kind of shielded box being convenient to switch as claimed in claim 1, is characterized in that: described upper cover (12) front end is provided with handle (121).
7. a kind of shielded box being convenient to switch as claimed in claim 1, it is characterized in that: described in be convenient to switch shielded box be provided with and manually buckle, described manually buckle to comprise be fixed on rising to the bait (192) and being arranged on the lower button (191) on described casing (11) of described upper cover (12), described lower button (191) is provided with telescopic spring (1911), and the fixed position of described lower button (191) is lower than the closed position of described rise to the bait (192).
8. a kind of shielded box being convenient to switch as claimed in claim 7, it is characterized in that: described lower button (191) is rotatably installed on described casing (11) by rotating shaft (1912), during normality, described lower button (191) is suspended in described rotating shaft (1912) downwards, during fastening, described lower button (191) rotate up 180 ° be fastened on described in rise to the bait on (192).
9. a kind of shielded box being convenient to switch as claimed in claim 1, is characterized in that: described in be convenient to switch shielded box in be also provided with test fixture (14) for clamping tested product.
10. a kind of shielded box being convenient to switch as claimed in claim 1, is characterized in that: described casing (11) is provided with one deck flexible conducting material layer with the contact position of upper cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420544978.XU CN204086331U (en) | 2014-09-22 | 2014-09-22 | A kind of shielded box being convenient to switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420544978.XU CN204086331U (en) | 2014-09-22 | 2014-09-22 | A kind of shielded box being convenient to switch |
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| Publication Number | Publication Date |
|---|---|
| CN204086331U true CN204086331U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420544978.XU Active CN204086331U (en) | 2014-09-22 | 2014-09-22 | A kind of shielded box being convenient to switch |
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| Country | Link |
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| CN (1) | CN204086331U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629342A (en) * | 2015-12-25 | 2016-06-01 | 无锡信大气象传感网科技有限公司 | Rain collector of automatic flip tipping bucket type rain sensor |
| CN109774058A (en) * | 2019-03-11 | 2019-05-21 | 珠海汇智智能装备有限公司 | A kind of pick-and-place insert device and pick-and-place method based on electromagnet and pneumatic fit |
| CN111683511A (en) * | 2020-04-27 | 2020-09-18 | 苏州佰富林航空装备有限公司 | Electromagnetic shielding cabinet |
| US11019757B2 (en) | 2018-01-22 | 2021-05-25 | Wistron Corporation | Back cover module |
-
2014
- 2014-09-22 CN CN201420544978.XU patent/CN204086331U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629342A (en) * | 2015-12-25 | 2016-06-01 | 无锡信大气象传感网科技有限公司 | Rain collector of automatic flip tipping bucket type rain sensor |
| US11019757B2 (en) | 2018-01-22 | 2021-05-25 | Wistron Corporation | Back cover module |
| CN109774058A (en) * | 2019-03-11 | 2019-05-21 | 珠海汇智智能装备有限公司 | A kind of pick-and-place insert device and pick-and-place method based on electromagnet and pneumatic fit |
| CN111683511A (en) * | 2020-04-27 | 2020-09-18 | 苏州佰富林航空装备有限公司 | Electromagnetic shielding cabinet |
| CN111683511B (en) * | 2020-04-27 | 2022-07-05 | 苏州飞航防务装备有限公司 | Electromagnetic shielding cabinet |
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| GR01 | Patent grant |